Answer:
A. . A cheeseburger is $7.95 plus $1.00 for each additional topping.
Step-by-step explanation:
Let's first find how many students bring their lunch to school. This is 30% of 300. To find this value, convert the percentage to a fraction (or decimal) and multiply:

Since 90 students bring their lunch to school, we can say 210 students do not bring their lunch to school. (300 - 90 = 210)
Answer:
c. w = -1
Step-by-step explanation:
you have to add 2 with -3 and you get -1.